Question

g. The Primary key is a
........
.... key.​

Answer 1

The primary key is specific choice of a minimal set of attributes that uniquely specify a tuple in a relation

Answer 2

Explanation:

The primary key is also called a primary keyword is a key in a relational database that is unique for each record. it is a unique identifier such as a driver license number , telephone number (including area code)or vehicle identification number ( VIN ) . A relational database must always have one and only one primary key.

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